Source Rhizome with petiole base of Dryopteris crassirhizoma Nakai, family Dryopteridaceae and Blechnum orientale L., family Blechnaceae.
Producing Areas North, Northwest China and areas to the south of the Yangtze River
Properties Bitter, Slightly Cold
Channels Liver, Spleen
•Clears away toxic heat
For preventing and treating pestilence and seasonal febrile diseases, such as influenza, epidemic cerebrospinal, mumps, measles, etc. It is also used for viral pneumonia.
•Cools the blood and stops bleeding
For controlling profuse uterine bleeding due to blood-heat, hematemesis, epistaxis, hemafecia, eruptive diseases, etc.
Usage and Dosage
10 – 15g is used in decoction for oral use. The crude is for clearing away heat, eliminating toxins and killing worms. The carbonised is for stopping bleeding.
Notes Use with caution in the case with asthenic cold of the spleen and stomach.
Not suitable for use in large doses as it is toxic.
Keep in a dry place. Protect from dust. It is not suitable for long-term storage.
Description of Quality Herb
The good one is big and compact, with brownish green broken surface of the petiole base.
Other medicinal materials known as Guanzhong
•Ziqi Guanzhong Japanese Flowering Fern Rhizome (Rhizoma osmundae): There are no scales on the rhizome, which usually has an empty-centred broken surface.
•Gouji Guanzhong Japanese China Fern Rhizome (Rhizoma woodwardiae japonicae): It is shaped like a long cylinder with a sparse petiole and reddish brown to dark brown surface. The crosssection of the base is semicircular.
•Jiaguojue Guanzhong Ostrich- feather Fern Rhizome (Rhizoma matteucciae struthiopteris): The two sides of the petiole are smooth.
•Emeijue Guanzhong (Lunathyrium acrostichoides Ching): There are thorn-like bulges on the two sides of the petiole.
•Wumaojue Guanzhong Oriental Blechnum Fern Rhizome (Blechnum orientale Linn.): There are 17 – 21 central columns in the cross-section of the petiole base, arranged in a circle.
•Sutiejue Guanzhong Cycad-fern Rhizome (Rhizoma brainea insignis): The rhizome is cylindrical. The cross-section of the petiole base has 6 – 10 central columns arranged in a circle.